To develop the imaginative power for design is a mission allotted to the education of the basic design. To create a meaning with imagination is as important a factor for design training as to train sense through the construction of forms and the practice in a color scheme and to train the technique of expression. In order to carry out this mission it is requisite to visualize imagination by combining real forms. Therefore it is one of the available methods, I think, to make use of photo-collage in this training. For this method help us freely develop and fix idea by seeing many photographs, selecting a good one from among them and combining them according to our intention. Moreover, in the process of this production the imaginative power is given ample stimulus for it to make an active operation at every opportunity. This paper is intended to be an analytical consideration of the relationship between imagination and photo-collage, the meaning of photograph as material, and the method of expression in photo-collage.

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I Purpose What physical element is man's sensory judgement affected by, on axis of "simplicity-complication" in plane figures?. This study aims to make the functional relation clear and at the same time put the scale to practical use. II Method (1) On a card of 15×15cm, random figures of equal area are made used with table of random numders. (2) Judgement of "simplicity-complication" is made by ranking method used with 26 sheet of card. Subject are 60 students of high school. (3) Rank value "ri" of stimulus "i" is compared with other stimuli when it is calculated. Result and conclusion (1) Sensory judgement of figure's complication is proportioned to logarithm of peripheral length per area of this figure. (2) The following regression equation comes from the experiment. y=1.6 log l/S-0.908 The coefficient of correlation is r=+0.988 (3) The "scale of complication" is made using the upper equation. It has an origin at circle and 1 at square. This unit is named "Comp.". An equation of change is as follows. C=(log li-log 2√<πS_0>)/(log 2-log √<π>) C: Complication li: peripheral length S_0: Standard area of figure (4) 1 Comp. ought to be an interval of unit on this scale judging from man's ability of difference threshold. (5) The "scale of complication" is put to practical use on the basis of this study.

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Johannes Itten was a prominent formative educator, who took charge of the "Basic Course" in the early "Bauhaus". As his essay on color is well-known to the world, he has his own method and theory on "form" as well. According to his "Mein Vorkurs am Bauhaus" he takes up a square, a triangle and a circle as basic forms, considering the first as a figure that is constructed with horizontal and perpendicular straight lines, the second, with acute angles and oblique lines, and the last, as the fundamental one of all the curved figures. These three basic forms are regarded by Itten as linear figures that are in the space that has directions. He seems to have given these theories not by abstracting organic forms but by purely geometrical consideration. Developing these simple forms by means of proportional partition and many kinds of geo-metrical transformation, he shows that we can produce various design forms. The fundamental principle of his composition is the theory of contrast and he tries to observe the relation between every object from this stand point. From this way of looking at things, fresh and lively composition can be made out. He also tried to make his students feel and comprehend the character of the forms through physical movements. As for rhythm, especially, he even let them walk and dance. To make out readiness to produce formative works he assigns warming up exercises every morning. At the bottom of this idea and method of formative education, there lies Oriental philosophy and a doctrine of Mazdaisrn that he has had a great interest in. Though much has been said about Itten's formative education, it had great deal of effect in the state of utter bewilderment after World War I and formed the basis of education in Bauhaus. We can still learn a lot in the present design education from his theory and method.

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